[BUG] Team plan showing 200K context instead of 1M on Claude Code

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

• CLI version: 2.1.78
• subscriptionType: team
• rateLimitTier: default_claude_max_5x
• Model: claude-opus-4-6
• Context shown: 200K
• Other team members with identical config see 1M
• Tried: re-login, CLI restart, latest version

What Should Happen?

With Team plan and Opus 4.6, the context window should show 1M tokens (as announced in https://claude.com/blog/1m-context-ga). Other team members with the same
configuration (subscriptionType: team, rateLimitTier: default_claude_max_5x, CLI 2.1.78) correctly see 1M, but my account shows 200K.

Error Messages/Logs

Steps to Reproduce

1. Login to Claude Code CLI (v2.1.78) with Team plan account
2. Run /context command
3. Context shows "claude-opus-4-6 · 27k/200k tokens" instead of expected 1M
4. Verified credentials: cat ~/.claude/.credentials.json | jq '.claudeAiOauth | {rateLimitTier, subscriptionType}' → rateLimitTier: "default_claude_max_5x",

subscriptionType: "team"

1. Another team member with identical setup sees 1M context
2. Already tried: re-login, CLI restart, confirmed latest version (2.1.78)

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

v2.1.78

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

Windows Terminal

Additional Information

_No response_